A highly sensitive and selective hypochlorite fluorescent probe based on oxidation of hydrazine via free radical mechanism
作者:Tanyu Cheng、Junwei Zhao、Ziyun Wang、Juzeng An、Yufang Xu、Xuhong Qian、Guohua Liu
DOI:10.1016/j.dyepig.2015.10.020
日期:2016.3
Developing fluorescent probes for selective and sensitive detection of hypochlorite has received much attention, because hypochlorite is closely related to human health. In this work, a new fluorescent probe based on dipyrromethene boron difluoride (BODIPY) fluorophore using hydrazine as detecting group for hypochlorite was synthesized and fully characterized. The reaction of the probe with sodium
A general and efficient method for a-chlorination of 4,4'-difluoro-4-bora-3a,4a-diaza-s-indacenes (BODIPYs) has been developed using CuCl2 as chlorination reagent. The reaction is characterized by complete 3/5-positions of BODIPY regioselectivity. This unusual highly regioselective alpha-halogenation of BODIPY is in sharp contrast to previously reported halogenation methods which preferred to occur first at the 2,6-positions of BODIPY. This approach provides a straightforward, facile, and economical route to 3- and/or 5-chloroBODIPYs with various meso-groups (H, alkyl, and aryl) and their derivatives.